To repeat the problem pick any morph and simply try to export it as a
JPEG.

Squeak 3.6beta update 5402, VM 3.5.2 beta1
MacOS 10.2.6


5 September 2003 9:22:47 pm

VM: Mac OS - Squeak3.5 of '11 April 2003' [latest update: #5180] Squeak
VM 3.5.2b1
Image: Squeak3.6beta [latest update: #5402]

JPEGReadWriter2(Object)>>error:
	Receiver: a JPEGReadWriter2
	Arguments and temporary variables: 
		aString: 	'a primitive has failed'
	Receiver's instance variables: 
		stream: 	StandardFileStream: 'OSXI:Dev:ATELIER
SQUEAK:Squeak3.6Beta:Star.jpeg'

JPEGReadWriter2(Object)>>primitiveFailed
	Receiver: a JPEGReadWriter2
	Arguments and temporary variables: 

	Receiver's instance variables: 
		stream: 	StandardFileStream: 'OSXI:Dev:ATELIER
SQUEAK:Squeak3.6Beta:Star.jpeg'

JPEGReadWriter2>>primJPEGCompressStructSize
	Receiver: a JPEGReadWriter2
	Arguments and temporary variables: 

	Receiver's instance variables: 
		stream: 	StandardFileStream: 'OSXI:Dev:ATELIER
SQUEAK:Squeak3.6Beta:Star.jpeg'

JPEGReadWriter2>>nextPutImage:quality:progressiveJPEG:
	Receiver: a JPEGReadWriter2
	Arguments and temporary variables: 
		aForm: 	Form(28x28x32)
		quality: 	-1
		progressiveFlag: 	false
		sourceForm: 	Form(28x28x32)
		jpegCompressStruct: 	nil
		jpegErrorMgr2Struct: 	nil
		buffer: 	nil
		byteCount: 	nil
	Receiver's instance variables: 
		stream: 	StandardFileStream: 'OSXI:Dev:ATELIER
SQUEAK:Squeak3.6Beta:Star.jpeg'


--- The full stack ---
JPEGReadWriter2(Object)>>error:
JPEGReadWriter2(Object)>>primitiveFailed
JPEGReadWriter2>>primJPEGCompressStructSize
JPEGReadWriter2>>nextPutImage:quality:progressiveJPEG:
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[] in JPEGReadWriter2
class>>putForm:quality:progressiveJPEG:onFileNamed:
BlockContext>>ensure:
CursorWithMask(Cursor)>>showWhile:
JPEGReadWriter2 class>>putForm:quality:progressiveJPEG:onFileNamed:
Form>>writeJPEGfileNamed:progressive:
Form>>writeJPEGfileNamed:
StarMorph(Morph)>>exportAsJPEG
[] in MenuItemMorph>>invokeWithEvent:
BlockContext>>ensure:
CursorWithMask(Cursor)>>showWhile:
MenuItemMorph>>invokeWithEvent:
MenuItemMorph>>mouseUp:
MenuItemMorph>>handleMouseUp:
MouseButtonEvent>>sentTo:
MenuItemMorph(Morph)>>handleEvent:
MorphicEventDispatcher>>dispatchDefault:with:
MorphicEventDispatcher>>dispatchEvent:with:
MenuItemMorph(Morph)>>processEvent:using:
MorphicEventDispatcher>>dispatchDefault:with:
MorphicEventDispatcher>>dispatchEvent:with:
MenuMorph(Morph)>>processEvent:using:
MenuMorph(Morph)>>processEvent:
MenuMorph>>handleFocusEvent:
[] in HandMorph>>sendFocusEvent:to:clear:
NCWorldMorph(PasteUpMorph)>>becomeActiveDuring:
HandMorph>>sendFocusEvent:to:clear:
HandMorph>>sendEvent:focus:clear:
HandMorph>>sendMouseEvent:
HandMorph>>handleEvent:
HandMorph>>processEvents
[] in WorldState>>doOneCycleNowFor:
Array(SequenceableCollection)>>do:
WorldState>>handsDo:
WorldState>>doOneCycleNowFor:
WorldState>>doOneCycleFor:
NCWorldMorph(PasteUpMorph)>>doOneCycle
[] in Project class>>spawnNewProcess
[] in BlockContext>>newProcess